E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/66
E02D 17/08 (2006.01)
Patent
CA 1296908
SHORING DEVICE Abstract There is disclosed a device for shoring the side walls of a trench or the like which includes a pair of elongate rails and a pair of parallel, hydraulically extendible and contractible actuators connected at opposite ends to the rails for lowering with the rails into and out of positions between the walls of the trench, and adapted, when extended, to hold the rails tightly against the walls.
562089
Bradberry George
Finlayson & Singlehurst
Lipscomb Walter
Southland Industries Inc.
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